@plugjs/cov8/dist/coverage.mjs

V8 Coverage Plugin for the PlugJS Build System ==============================================

// coverage.ts
import { sep } from "node:path";
import { html, initFunction } from "@plugjs/cov8-html";
import { assert } from "@plugjs/plug/asserts";
import { Files } from "@plugjs/plug/files";
import { $gry, $ms, $p, $plur, $red, $ylw, ERROR, NOTICE, WARN } from "@plugjs/plug/logging";
import { resolveAbsolutePath } from "@plugjs/plug/paths";
import { walk } from "@plugjs/plug/utils";
import { createAnalyser } from "./analysis.mjs";
import { coverageReport } from "./report.mjs";
var Coverage = class {
  constructor(_coverageDir, _options = {}) {
    this._coverageDir = _coverageDir;
    this._options = _options;
  }
  async pipe(files, context) {
    const coverageDir = context.resolve(this._coverageDir);
    const coverageFiles = [];
    for await (const file of walk(coverageDir, ["coverage-*.json"])) {
      coverageFiles.push(resolveAbsolutePath(coverageDir, file));
    }
    assert(coverageFiles.length > 0, `No coverage files found in ${$p(coverageDir)}`);
    const sourceFiles = [...files.absolutePaths()];
    const ms1 = Date.now();
    const analyser = await createAnalyser(
      sourceFiles,
      coverageFiles,
      this._options.sourceMapBias || "least_upper_bound",
      context.log
    );
    context.log.info("Parsed", coverageFiles.length, "coverage files", $ms(Date.now() - ms1));
    const ms2 = Date.now();
    const report = await coverageReport(analyser, sourceFiles, context.log);
    context.log.info("Analysed", sourceFiles.length, "source files", $ms(Date.now() - ms2));
    analyser.destroy();
    const {
      minimumCoverage = 50,
      minimumFileCoverage = minimumCoverage,
      optimalCoverage = Math.round((100 + minimumCoverage) / 2),
      optimalFileCoverage = Math.round((100 + minimumFileCoverage) / 2)
    } = this._options;
    let max = 0;
    for (const file in report) {
      if (file.length > max) max = file.length;
    }
    let maxLength = 0;
    for (const file in report.results) {
      if (file.length > maxLength) maxLength = file.length;
    }
    let fileErrors = 0;
    let fileWarnings = 0;
    const _report = context.log.report("Coverage report");
    for (const [_file, result] of Object.entries(report.results)) {
      const { coverage } = result.nodeCoverage;
      const file = _file;
      if (coverage == null) {
        _report.annotate(NOTICE, file, "n/a");
      } else if (coverage < minimumFileCoverage) {
        _report.annotate(ERROR, file, `${coverage} %`);
        fileErrors++;
      } else if (coverage < optimalFileCoverage) {
        _report.annotate(WARN, file, `${coverage} %`);
        fileWarnings++;
      } else {
        _report.annotate(NOTICE, file, `${coverage} %`);
      }
    }
    if (report.nodes.coverage == null) {
      const message = "No coverage data collected";
      _report.add({ level: WARN, message });
    } else if (report.nodes.coverage < minimumCoverage) {
      const message = `${$red(`${report.nodes.coverage}%`)} does not meet minimum coverage ${$gry(`(${minimumCoverage}%)`)}`;
      _report.add({ level: ERROR, message });
    } else if (report.nodes.coverage < optimalCoverage) {
      const message = `${$ylw(`${report.nodes.coverage}%`)} does not meet optimal coverage ${$gry(`(${optimalCoverage}%)`)}`;
      _report.add({ level: WARN, message });
    }
    if (fileErrors) {
      const f = $plur(fileErrors, "file does", "files do");
      const message = `${f} not meet minimum file coverage ${$gry(`(${minimumFileCoverage}%)`)}`;
      _report.add({ level: ERROR, message });
    }
    if (fileWarnings) {
      const f = $plur(fileWarnings, "file does", "files do");
      const message = `${f} not meet optimal file coverage ${$gry(`(${optimalFileCoverage}%)`)}`;
      _report.add({ level: WARN, message });
    }
    if (this._options.reportDir == null) return _report.done(false);
    const reportDir = context.resolve(this._options.reportDir);
    const builder = Files.builder(reportDir);
    const date = (/* @__PURE__ */ new Date()).toISOString();
    const thresholds = {
      minimumCoverage,
      minimumFileCoverage,
      optimalCoverage,
      optimalFileCoverage
    };
    await builder.write("report.json", JSON.stringify({ ...report, thresholds, date }));
    await builder.write("index.html", html);
    const results = {};
    for (const [rel, abs] of files.pathMappings()) {
      results[rel] = report.results[abs];
    }
    const tree = {};
    for (const relative of Object.keys(results)) {
      const directories = relative.split(sep);
      const file = directories.pop();
      let node = tree;
      for (const dir of directories) {
        node = node[dir] = node[dir] || {};
      }
      node[file] = relative;
    }
    const jsonp = JSON.stringify({ ...report, results, thresholds, tree, date });
    await builder.write("report.js", `${initFunction}(${jsonp});`);
    _report.done(false);
    return builder.build();
  }
};
export {
  Coverage
};
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